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Several weeks ago it was brought to my attention that a customer was seeing an increasingly large number of tickets for Notes crashes when attaching or detaching files from an e-mail. After quite bit of time, we kept finding references to lcppn30.dll in the crash data:

If you are not familiar with lcppn30.dll, it is an IBM library that is part of the Notes C++ API package and used by third-party Notes plug-ins. In all instances, lcppn30.dll was being used by Adobe’s PDFMaker. There is a known issue with PDFMaker causing Notes crashes after an upgrade. According to IBM Technote 1437890, IBM has resolved the issue in Notes 8.5.1 Fix Pack 5 and Notes 8.5.2 (this customer is still using Notes 8.5). While the issues we saw did not impact Notes on startup, the resolution was still the same. The obvious fix is to install 8.5.1 Fix Pack 5 or 8.5.2, but this customer has a very tightly controlled environment and therefore this was not an option. The other option is to uninstall PDFMaker, but that really wasn’t optimal either. That left us with disabling the plug-in. To do that remove the following lines from the notes.ini (some of these lines may not exist in every installation):